72877555577826 has 48 divisors (see below), whose sum is σ = 160491685910400. Its totient is φ = 23894017227360.

The previous prime is 72877555577791. The next prime is 72877555577831. The reversal of 72877555577826 is 62877555577827.

72877555577826 is a `hidden beast` number, since 7 + 2 + 8 + 7 + 7 + 55 + 557 + 7 + 8 + 2 + 6 = 666.

It is a super-2 number, since 2×72877555577826² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116254375 + ... + 116879573.

It is an arithmetic number, because the mean of its divisors is an integer number (3343576789800).

Almost surely, 2^{72877555577826} is an apocalyptic number.

72877555577826 is an abundant number, since it is smaller than the sum of its proper divisors (87614130332574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72877555577826 is a wasteful number, since it uses less digits than its factorization.

72877555577826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731431 (or 731428 counting only the distinct ones).

The product of its digits is 16134720000, while the sum is 81.

Subtracting from 72877555577826 its reverse (62877555577827), we obtain a palindrome (9999999999999).

The spelling of 72877555577826 in words is "seventy-two trillion, eight hundred seventy-seven billion, five hundred fifty-five million, five hundred seventy-seven thousand, eight hundred twenty-six".